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242 lines
6.9 KiB
242 lines
6.9 KiB
4 months ago
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/*
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* Copyright (c) 2011-2014, The Linux Foundation. All rights reserved.
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* * Neither the name of The Linux Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#define DEBUG 0
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#define ATRACE_TAG (ATRACE_TAG_GRAPHICS | ATRACE_TAG_HAL)
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#include <errno.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <sys/ioctl.h>
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#include <sys/mman.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <cutils/trace.h>
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#include <log/log.h>
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#include <utils/Trace.h>
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#include "gralloc_priv.h"
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#include "ionalloc.h"
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using gralloc::IonAlloc;
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#define ION_DEVICE "/dev/ion"
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int IonAlloc::open_device()
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{
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if(mIonFd == FD_INIT)
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mIonFd = open(ION_DEVICE, O_RDONLY);
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if(mIonFd < 0 ) {
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ALOGE("%s: Failed to open ion device - %s",
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__FUNCTION__, strerror(errno));
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mIonFd = FD_INIT;
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return -errno;
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}
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return 0;
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}
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void IonAlloc::close_device()
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{
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if(mIonFd >= 0)
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close(mIonFd);
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mIonFd = FD_INIT;
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}
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int IonAlloc::alloc_buffer(alloc_data& data)
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{
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ATRACE_CALL();
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Locker::Autolock _l(mLock);
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int err = 0;
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struct ion_handle_data handle_data;
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struct ion_fd_data fd_data;
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struct ion_allocation_data ionAllocData;
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void *base = 0;
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ionAllocData.len = data.size;
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ionAllocData.align = data.align;
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ionAllocData.heap_id_mask = data.heapId;
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ionAllocData.flags = data.flags;
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ionAllocData.flags |= data.uncached ? 0 : ION_FLAG_CACHED;
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err = open_device();
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if (err)
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return err;
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if(ioctl(mIonFd, ION_IOC_ALLOC, &ionAllocData)) {
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err = -errno;
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ALOGE("ION_IOC_ALLOC failed with error - %s", strerror(errno));
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return err;
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}
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fd_data.handle = ionAllocData.handle;
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handle_data.handle = ionAllocData.handle;
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if(ioctl(mIonFd, ION_IOC_MAP, &fd_data)) {
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err = -errno;
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ALOGE("%s: ION_IOC_MAP failed with error - %s",
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__FUNCTION__, strerror(errno));
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ioctl(mIonFd, ION_IOC_FREE, &handle_data);
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return err;
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}
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if(!(data.flags & ION_SECURE)) {
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base = mmap(0, ionAllocData.len, PROT_READ|PROT_WRITE,
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MAP_SHARED, fd_data.fd, 0);
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if(base == MAP_FAILED) {
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err = -errno;
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ALOGE("%s: Failed to map the allocated memory: %s",
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__FUNCTION__, strerror(errno));
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ioctl(mIonFd, ION_IOC_FREE, &handle_data);
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return err;
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}
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}
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data.base = base;
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data.fd = fd_data.fd;
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ioctl(mIonFd, ION_IOC_FREE, &handle_data);
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ALOGD_IF(DEBUG, "ion: Allocated buffer base:%p size:%zu fd:%d",
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data.base, ionAllocData.len, data.fd);
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return 0;
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}
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int IonAlloc::free_buffer(void* base, unsigned int size, unsigned int offset,
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int fd)
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{
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ATRACE_CALL();
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Locker::Autolock _l(mLock);
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ALOGD_IF(DEBUG, "ion: Freeing buffer base:%p size:%u fd:%d",
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base, size, fd);
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int err = 0;
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err = open_device();
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if (err)
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return err;
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if(base)
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err = unmap_buffer(base, size, offset);
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close(fd);
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return err;
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}
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int IonAlloc::map_buffer(void **pBase, unsigned int size, unsigned int offset,
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int fd)
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{
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ATRACE_CALL();
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int err = 0;
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void *base = 0;
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// It is a (quirky) requirement of ION to have opened the
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// ion fd in the process that is doing the mapping
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err = open_device();
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if (err)
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return err;
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base = mmap(0, size, PROT_READ| PROT_WRITE,
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MAP_SHARED, fd, 0);
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*pBase = base;
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if(base == MAP_FAILED) {
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err = -errno;
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ALOGE("ion: Failed to map memory in the client: %s",
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strerror(errno));
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} else {
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ALOGD_IF(DEBUG, "ion: Mapped buffer base:%p size:%u offset:%u fd:%d",
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base, size, offset, fd);
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}
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return err;
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}
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int IonAlloc::unmap_buffer(void *base, unsigned int size,
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unsigned int /*offset*/)
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{
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ATRACE_CALL();
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ALOGD_IF(DEBUG, "ion: Unmapping buffer base:%p size:%u", base, size);
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int err = 0;
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if(munmap(base, size)) {
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err = -errno;
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ALOGE("ion: Failed to unmap memory at %p : %s",
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base, strerror(errno));
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}
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return err;
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}
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int IonAlloc::clean_buffer(void *base, unsigned int size, unsigned int offset,
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int fd, int op)
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{
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ATRACE_CALL();
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ATRACE_INT("operation id", op);
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struct ion_flush_data flush_data;
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struct ion_fd_data fd_data;
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struct ion_handle_data handle_data;
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int err = 0;
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err = open_device();
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if (err)
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return err;
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fd_data.fd = fd;
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if (ioctl(mIonFd, ION_IOC_IMPORT, &fd_data)) {
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err = -errno;
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ALOGE("%s: ION_IOC_IMPORT failed with error - %s",
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__FUNCTION__, strerror(errno));
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return err;
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}
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handle_data.handle = fd_data.handle;
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flush_data.handle = fd_data.handle;
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flush_data.vaddr = base;
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// offset and length are unsigned int
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flush_data.offset = offset;
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flush_data.length = size;
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struct ion_custom_data d;
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switch(op) {
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case CACHE_CLEAN:
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d.cmd = ION_IOC_CLEAN_CACHES;
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break;
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case CACHE_INVALIDATE:
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d.cmd = ION_IOC_INV_CACHES;
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break;
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case CACHE_CLEAN_AND_INVALIDATE:
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default:
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d.cmd = ION_IOC_CLEAN_INV_CACHES;
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}
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d.arg = (unsigned long int)&flush_data;
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if(ioctl(mIonFd, ION_IOC_CUSTOM, &d)) {
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err = -errno;
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ALOGE("%s: ION_IOC_CLEAN_INV_CACHES failed with error - %s",
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__FUNCTION__, strerror(errno));
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ioctl(mIonFd, ION_IOC_FREE, &handle_data);
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return err;
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}
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ioctl(mIonFd, ION_IOC_FREE, &handle_data);
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return 0;
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}
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